This study examined the properties of the essential oil of Eucalyptus globulus, an aromatic plant present in Senegal. The essential oil was extracted by hydrodistillation and analyzed by usual gas chromatography (GC/Ir and GC/MS). The main chemical compounds identified were eucalyptol (40.42%), α-phellandrene (8.92%), limonene (7.17%), and α-pinene (6.49%).
The inhibitory effect of this essential oil on C24 steel in 1M HCl medium was also evaluated using electrochemical methods. The results indicated a maximum effectiveness of 80.6% at an essential oil concentration of 1.5 g/L and a temperature of 290 K. Beyond this concentration, the effectiveness decreased. We also examined the influence of temperature on the inhibitory action of the essential oil, in a range from 290 to 328 K. We found a decrease in effectiveness with increasing temperature, reaching 48.67% at 328 K. In addition, the thermodynamic quantities were calculated. The isotherm results demonstrated that the adsorption of the essential oil follows the Langmuir isotherm, suggesting a physical adsorption character of this essential oil on the C24 steel
